Plug lock device



FIG. 1 is a left hand perspective view for a plug lock device;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right end elevational view thereof; and,

FIG. 7 is a left end elevational view thereof.

The broken line showing of the plug in FIGS. 1 and 2 is included for the purpose of illustrating environmental structure only and forms no part of the claimed design. 

The ornamental design for a plug lock device, as shown and described. 